CalcA beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is 256/3(pi) cubic centimeters, what is the rate of change of the surface area? (S=4(pi)r^2 and V=4/3(pi)r^3)
December 22, 2014

c programminga student designed a program to accept the age of an employee and then compute the employees retirement year and display the same in a statement on the screen required. a) write out the pseudo-code for the program above b) write the algorithm, c) flowchart d) write the program...
October 14, 2014

MathThis is a bonus question. If the modes of a problem are13 and15 and the mean and the median are 15 how do you come up with the other numbers
September 30, 2014

Algebra A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters
September 23, 2014

PhysicsTwo forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 = 416 N, 10 degrees to the left of north and F2 = 356 N, 30 degrees to the right of north. What is the sum of these two forces acting on the car? ...
September 12, 2014

CivicsExplain how federal income taxes support the economy and benefit the common good. I have to have at least one well-developed paragraph, and this question is worth 10 points which is why I need help!!
June 11, 2014

MathWhich of the following transformations will never produce a congruent figure? A. rotation B. reflection C. translation D. dilation <------
May 22, 2014

Math1)Let AB be the directed line segment beginning at point A(1 , 1) and ending at point B(-4 , 6). Find the point P on the line segment that partitions the line segment into the segments AP and PB at a ratio of 5:1. A)(-3 1/6,5 1/6) B)(1/6,1 5/6) <---- C)(-3 4/5,31) D)(-2 1/6...
May 22, 2014

MathUse experimental probability to make a prediction. John made 35 free throws and missed 15. Predict the number of free throws he will make in the next 100 tries. A. 70 B. 85 C. 55 D. 45
May 2, 2014

PhysicsA rope is used to pull a 5.19 kg block at constant speed 3.38 m along a horizontal floor. The force on the block from the rope is 3.23 N and directed 20.0° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the ...
March 10, 2014

PhysicsA 540 g block is released from rest at height h0 above a vertical spring with spring constant k = 320 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 19.8 cm. How much work is done (a) by the block on the spring and (b...
March 10, 2014

PhysicsDamon, this is my last question for today for you. Thanks for all your help. A gas is at an initial pressure of 1.24104 Pa and occupies a volume of 0.28 m3. The (slow) addition of 23,570 cal of heat to the system causes it to expand in an isobaric manner to a volume of 0.47 m3...
February 3, 2014

PhysicsHow much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
February 3, 2014

PhysicsAn aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added. After a while, the ...
February 3, 2014

PhysicsA weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat (in kcal) she must put out if her internal energy decreases by 3620 J during the lift.
January 31, 2014

PhysicsA weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat (in kcal) she must put out if her internal energy decreases by 3620 J during the lift. Not sure how to answer this.
January 31, 2014

PhysicsA gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas leaks until the pressure falls to 1500 kPa. How many moles of gas leaked, assuming that the temperature remains constant during this process?
January 17, 2014

PhysicsA can of gasoline has a rectangular base with dimensions of 13.5 cm by 13 cm. If there are 3 liters of gasoline in the can, how much does the surface of the gasoline rise (in mm) in the can when the temperature is raised by 45C? The coefficient for volume expansion of gasoline...
January 17, 2014

Physics1. A gold atom has a mass of 3.287  10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646  10-27 kg. In this process, the gold atom is transformed into an iridium isotope. The alpha particle has a speed of 3.40  106 m/s. A. What is the ...
November 14, 2013

Calculus-Applied Optimization Quiz ProblemA rancher wants to fence in a rectangular area of 23000 square feet in a field and then divide the region in half with a fence down the middle parallel to one side. What is the smallest length of fencing that will be required to do this?
October 31, 2013

physicsAn archer shoots a 54.6 g arrow horizontally at a target 14.0 m away. The arrow is 18.0 inches long. The 54.6 g arrow is aimed directly at the center of the target, but it hits 60.0 cm lower. What was the initial speed of the arrow? (Neglect air resistance.)
September 5, 2013

BiochemistryCalculate the ATPs resulting from the total oxidation of the following compounds: a. Fructose-6-phosphate b. 3-Phosphoglycerate c. Succinyl-CoA d. Stearic acid How do I begin?
April 28, 2013

BiochemistryBased on free energies of hydrolysisgiven below, for each of the followingreactions: i)Determine the overall ∆G of thereaction ii)State whether it is favorable...
April 18, 2013

calculusThe demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+19 Determine the consumers...
April 10, 2013

language artsThe answer is B you can tell from the context clues since the sentence refers to a scientist that would be a guest speaker. From this you can deduce that this person is going to do a sort of lecture which usually involves speech and writing. Reasons why other answers are wrong...
April 9, 2013

calculusThe demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. -0.01x^2-0.3x+19 Determine the consumers'...
March 16, 2013

4th grade mathI am a 2 digit number. You can divide me by every single digit except for 5 and 7. Add my digits together and the sum is 9. What number am I?
October 9, 2012

Spanish CheckVamos a... Form sentences using the following information. Use ir a + infinitive in each sentence to express what the subject is going to do. Follow the model closely. 1.Leonardo / trabajar / las tres de la tarde -Leonardo está estudia las tres de la tarde 2. Mar&iacute...
October 4, 2012

physicsIP A jogger runs with a speed of 3.10{\rm m/s} in a direction 25.0{^\circ} above the x axis. Find the x and y components of the jogger's velocity.
September 11, 2012

mathI'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured into the tank. How many containers of water are needed to fill the tank? What is the formula to finding this?
May 10, 2012

Eng.Given that she previously belonged to high society and that later she had to move to a trailer park, she did not like to mix with the rif-raff in the park. What part of speech is GIVEN in this sentence.
March 22, 2012

ChemistryYou found an unknown metal sample shaped as a cube with each side measuring 2.00 cm. The cube's mass is 48.0 . Your colleague examined the mystery cube with X-ray diffraction and told you that it contains just one element arranged in a body-centered-cubic -lattice, and ...
March 18, 2012

Chemistrythere's a part c that I didn't know how to do either... c) Calculate the actual percent yield of Fe2O3(s)
March 18, 2012

ChemistryA 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the mass of Fe2O3(s) ...
March 18, 2012

ChemistryFor the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)
March 18, 2012

ChemistryOkay so why is there a 1 here: Kc = 97.0 = 1/[(0.2-x)(0.2-x)] where did you get the 1 from? Also in this equation: H2S (g) + NH3 (g) ---> NH4HS (s) What if there was a 2 in front of the NH4HS(s)...would that make it a 2 in place of the one? So for example: Kc = 97.0 = 2/[(0...
March 18, 2012

Chemistry For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)
March 18, 2012

EnglishRead the following passage by Picoult and identify the metaphor. Quote the metaphor in your response and explain what makes it fit the definition of metaphor. My mother moves so fast I do not even see it coming. But she slaps my face hard enough to make my head snap ...
February 25, 2012

physicsWhen jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 79.1 kg man just before contact with the ground has a speed of 6.27 m/s. In a stiff-legged landing...
February 23, 2012

physics please helpA 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an upward cruise with ...
February 20, 2012

PhysicsA 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted to the ice's ...
February 20, 2012

language artsWhere is the comma needed in the sentence? After traveling to Bryce Canyon, Utah, Karen drove to Canyonlands National Park, Utah, where she took pictures of the sandstone formation. I put in the commas already, I just want to know if this is correct because I'm not sure.
January 29, 2012

PhysicsAn airline pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25.0 N for 10.0 meters. The handle she pulls on makes an angle of 42.5 degrees with the horizontal. How much work does she do over the ten-meter distance? Tried doing: (Cos(42.5) * 25N) * ...
January 12, 2012

PhysicsA hockey stick applies a constant force over a distance of 0.127 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?
January 12, 2012